﻿/*  Copyright (C) 2008 - 2011 Jordan Marr

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see <http://www.gnu.org/licenses/>. */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;

namespace Marr.Data
{
    internal static class DataHelper
    {
        public static bool HasColumn(this IDataReader dr, string columnName) 
        { 
            for (int i=0; i < dr.FieldCount; i++) 
            { 
                if (dr.GetName(i).Equals(columnName, StringComparison.InvariantCultureIgnoreCase)) 
                    return true; 
            } 
            return false; 
        }

        public static string ParameterPrefix(this IDbCommand command)
        {
            string commandType = command.GetType().Name.ToLower();
            return commandType.Contains("oracle") ? ":" : "@";
        }
    }
}
